## Abstract

Under the Gaussian spatial distribution approximation, the coupled rate equations for a diode-pumped, dual-loss-modulated, $Q$-switched, and mode-locked (QML) green laser with EO and ${\mathrm{Cr}}^{4+}\text{:}\mathrm{YAG}$ are derived. The numerical simulation results show that the pulse width of the $Q$-switched envelope is related to the pump power, repetition rate of EO, initial transmission of ${\mathrm{Cr}}^{4+}\text{:}\mathrm{YAG}$, and the stimulated emission section of the gain medium. By designing the related parameters well, the pulse width of the $Q$-switched envelope can be greatly compressed to shorter than the cavity roundtrip transmit time, i.e., the interval of two neighboring mode-locking pulses; then subnanosecond single mode-locking pulses with low repetition rate, high pulse energy, and high stability can be obtained. The generation conditions of subnanosecond single mode-locking pulses per envelope in a dual-loss-modulated QML $\mathrm{Nd}\text{:}{\mathrm{Lu}}_{0.15}{\mathrm{Y}}_{0.85}{\mathrm{VO}}_{4}$ green laser with EO and ${\mathrm{Cr}}^{4+}\text{:}\mathrm{YAG}$ are experimentally demonstrated and found to be in agreement with the theoretical results.

© 2015 Optical Society of America

Full Article | PDF Article**More Like This**

_{0.15}Y

_{0.85}VO

_{4}laser with EO and Cr

^{4+}:YAG

Haijuan Zhang, Jia Zhao, Kejian Yang, Shengzhi Zhao, Guiqiu Li, Dechun Li, Tao Li, and Wenchao Qiao

Opt. Express **23**(15) 20176-20186 (2015)

_{4}/Nd:YVO

_{4}/KTP green laser with EO and Cr

^{4+}:YAG saturable absorber

Tao Li, Shengzhi Zhao, Zhuang Zhuo, Kejian Yang, Guiqiu Li, and Dechun Li

Opt. Express **18**(10) 10315-10322 (2010)

Jia Zhao, Shengzhi Zhao, Kejian Yang, and Gang Zhang

Appl. Opt. **52**(12) 2773-2779 (2013)